lcn equalizer pneumatic opener

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 Pneumatic Automatic Operators are used in areas where electrically operated devices are not convenient or permitted.  Consists of a modified, heavy-duty door closer for manual oper...
The 4630/4640 operator activation inputs are: Normal Activation Inputs (2 parallel) - terminals 16 & 17 or 18 & 19. Sequential Input - terminals 8 & 19. Alternate Action Input - terminals 15 &...